Answer:
41.0cm = 0.41m
1.19m = 119cm
Step-by-step explanation:
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Answer: The answers are given below.
Step-by-step explanation: Given that all the sides of a pentagon are (s-2) units long. This clearly tells us that the pentagon is a regular one with each side equal to (s-2) units.
We are to write the perimeter of the pentagon in four different expressions.
Let 'P' represents the perimeter of the pentagon.
Since it is a regular pentagon, we can write the perimeter in following four expressions.
P = (s-2) + (s-2) + (s-2) + (s-2) + (s-2),
= 5 × (s-2),
= 5s - 10,
= 5s - 5×2.
Thus, these are the four expressions for the perimeter of the pentagon.
Answer:
Step-by-step explanation:
Step 1: Sum of angles on a straight line is 180
Step 2:
2x + 25 + y = 180
2x + y = 180 - 25
2x + y = 155 (1)
Step 3:
3x - 10 + y = 180
3x + y = 180 + 10
3x + y = 190 (2)
Step 4: Substract equation 1 from 2
3x + y - 2x - y = 190 - 155
x = 35
Step 5:
Substitute x in equation 1 to find y
2x + y = 55
2(35) + y = 155
70 + y = 155
y = 155 - 70
y = 85
Answering your question on "9 students can make a poster in 10 hours. How many students should join them so that they all together can make this poster in 6 hours" its 13 students
